Across the 3 available reviews, all report beneficial small-sized effects for Lactobacillus rhamnosus on skin health outcomes. No clinical trials or dose-response data are available — the evidence is entirely from reviews that reference topical and oral applications for conditions like acne, rosacea, and wound healing. No consistent dose, duration, or population data can be derived from this evidence base.
Caveats: Evidence base is small (only 3 studies) — conclusions should be considered preliminary. Available evidence is overwhelmingly positive — clinical literature in this area is subject to publication bias (null-result studies are less likely to be published or indexed). All three sources are review articles (not primary human trials), and none report statistically significant findings or sample sizes — the underlying primary evidence strength is unknown.
consuming Lactobacillus rhamnosus lysate powder
Topical probiotics have demonstrated beneficial effects for the treatment of certain inflammatory skin diseases such as acne, rosacea, psoriasis etc., and also found to have a promising role in wound healing.
probiotics in personal care products, specifically for oral, skin, and intimate care